I have been taking this product for a couple of years now and it has been amazing. I have suffered with severe constipation for many years and tried all kinds of remedies and products but this is the first one to help. I have found though that over time I have had to increase the dose from 1 level teaspoon to 2 level teaspoons or slightly more. When I was on holiday I was so worried about getting bunged up that I took a bit too much for several days and ended up with a very bloated stomach and cramp pains. In the end I stopped the product to give my stomach a rest. It carried on working for about a week before the constipation was back and that was when I decided to try MagO7 as I had read it was gentler. Since then I have tried all the products on offer here and although I will probably carry on alternating between the various them, this is my fav and I wouldn't be without it. I will be careful though not to take too much in future!